Juvenile bar-tailed godwit sets new world record
non-stop 11-day migration of 8,425 miles
With its vast size and geographic position at the northern end of several migration pathways, Alaska is a critically important site for the world’s shorebirds. Thirty-seven shorebird species regularly breed in Alaska. Most of these species conduct epically long migrations to take advantage of Alaska’s abundant food resources and breeding habitat, making Alaska a global resource for shorebirds. Shorebird research at the USGS Alaska Science Center improves our knowledge of shorebirds and addresses key questions for management agencies about the distribution and abundance of these species.
Return to Ecosystems >> Terrestrial Ecosystems
Population Status and Ecology of North Pacific Shorebirds
Research on the population status and ecology of shorebirds in Alaska focuses on identifying critical phases of the annual cycle for these species. Because ninety percent of the migratory shorebird species in the Western Hemisphere have breeding populations in Alaska, our current research necessarily incorporates work that describes migratory routes and connections between Alaska and sites around the globe where these species stopover or spend the nonbreeding season. Such studies require large-scale, collaborative efforts that employ a variety of techniques to gain perspectives appropriate to the scale and range of these highly migratory species. Information from these studies is guiding conservation efforts and helping scientists and conservation groups to better understand the effects of global-scale threats to shorebirds, including habitat modification and degradation, climate change, and the spread of infectious diseases.
Bar-tailed Godwit
Bristle-thighed Curlew
Long-billed Curlew
Whimbrel
Bar-tailed Godwit (Limosa lapponica)
There are four species of godwits distributed around the world, three of which breed in Alaska: Bar-tailed, Hudsonian, and Marbled Godwits. Bar-tailed Godwits are considered a Bird of Conservation Concern by the US Fish and Wildlife Service due to their small population size, threats to their non-breeding grounds (especially at migratory stopover sites in the Yellow Sea), and their relatively restricted breeding distribution within the United States.
Additional articles and podcasts:
750 miles per day for 11 days, no rest, November 2022
Podcast: From Alaska to New Zealand, the bar-tailed godwit, January 2022
Blown back to Alaska, bird perseveres, November 2021
Shorebirds depend on wee slivers of Alaska, November 2021
The bar-tailed godwit's nonstop to New Zealand, 2005
Bristle-thighed Curlew (Numenius tahitiensis)
The Bristle-thighed Curlew breeds only at two disjunct locations in western Alaska, and has a broad, low-density distribution across atolls and islands in the Pacific Basin during the nonbreeding season. Its adult population numbers about 7,000 individuals, making it the rarest of the New World curlews and godwits. Due to their small population and threats to their nonbreeding grounds related primarily to sea-level rise and invasive species, the Bristle-thighed Curlew is a listed as a Bird of Conservation Concern by the US Fish and Wildlife Service.
Long-billed Curlew (Numenius americanus)
The Long-billed Curlew is the largest shorebird in North America. The species is considered a Bird of Conservation Concern by the US Fish and Wildlife Service due to the species' small population size, recent population declines, and threats to the species' breeding and non-breeding grounds.
Whimbrel (Numenius phaeopus)
Whimbrels closely resemble Bristle-thighed Curlews. Whimbrels are widely distributed at high-latitude breeding sites around the world, but Alaska-breeding Whimbrels are restricted to sites within the Pacific Flyway. These long-distance migrants are distributed at wintering sites from California to southern Chile.
Below are other science projects associated with this project.
Below are data or web applications associated with this project.
Below are multimedia items associated with this project.
Below are publications associated with this project.
Unusual foraging observations associated with seabird die-offs in Alaska
Shorebirds adjust spring arrival schedules with variable environmental conditions: Four decades of assessment on the Yukon–Kuskokwim Delta, Alaska
Energetic solutions of Rock Sandpipers to harsh winter conditions rely on prey quality
Testing an attachment method for solar-powered tracking devices on a long-distance migrating shorebird
Spatial genetic structure of bristle-thighed curlews (Numenius tahitiensis): Breeding area differentiation not reflected on the non-breeding grounds
Annual migratory patterns of long-billed curlews in the American west
Hemispheric-scale wind selection facilitates bar-tailed godwit circum-migration of the Pacific
Abdominally implanted satellite transmitters affect reproduction and survival rather than migration of large shorebirds
Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska
Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds
Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska
Identical metabolic rate and thermal conductance in Rock Sandpiper (Calidris ptilocnemis) subspecies with contrasting nonbreeding life histories
Below are news stories associated with this project.
Below are partners associated with this project.
With its vast size and geographic position at the northern end of several migration pathways, Alaska is a critically important site for the world’s shorebirds. Thirty-seven shorebird species regularly breed in Alaska. Most of these species conduct epically long migrations to take advantage of Alaska’s abundant food resources and breeding habitat, making Alaska a global resource for shorebirds. Shorebird research at the USGS Alaska Science Center improves our knowledge of shorebirds and addresses key questions for management agencies about the distribution and abundance of these species.
Return to Ecosystems >> Terrestrial Ecosystems
Population Status and Ecology of North Pacific Shorebirds
Research on the population status and ecology of shorebirds in Alaska focuses on identifying critical phases of the annual cycle for these species. Because ninety percent of the migratory shorebird species in the Western Hemisphere have breeding populations in Alaska, our current research necessarily incorporates work that describes migratory routes and connections between Alaska and sites around the globe where these species stopover or spend the nonbreeding season. Such studies require large-scale, collaborative efforts that employ a variety of techniques to gain perspectives appropriate to the scale and range of these highly migratory species. Information from these studies is guiding conservation efforts and helping scientists and conservation groups to better understand the effects of global-scale threats to shorebirds, including habitat modification and degradation, climate change, and the spread of infectious diseases.
Bar-tailed Godwit
Bristle-thighed Curlew
Long-billed Curlew
Whimbrel
Bar-tailed Godwit (Limosa lapponica)
There are four species of godwits distributed around the world, three of which breed in Alaska: Bar-tailed, Hudsonian, and Marbled Godwits. Bar-tailed Godwits are considered a Bird of Conservation Concern by the US Fish and Wildlife Service due to their small population size, threats to their non-breeding grounds (especially at migratory stopover sites in the Yellow Sea), and their relatively restricted breeding distribution within the United States.
Additional articles and podcasts:
750 miles per day for 11 days, no rest, November 2022
Podcast: From Alaska to New Zealand, the bar-tailed godwit, January 2022
Blown back to Alaska, bird perseveres, November 2021
Shorebirds depend on wee slivers of Alaska, November 2021
The bar-tailed godwit's nonstop to New Zealand, 2005
Bristle-thighed Curlew (Numenius tahitiensis)
The Bristle-thighed Curlew breeds only at two disjunct locations in western Alaska, and has a broad, low-density distribution across atolls and islands in the Pacific Basin during the nonbreeding season. Its adult population numbers about 7,000 individuals, making it the rarest of the New World curlews and godwits. Due to their small population and threats to their nonbreeding grounds related primarily to sea-level rise and invasive species, the Bristle-thighed Curlew is a listed as a Bird of Conservation Concern by the US Fish and Wildlife Service.
Long-billed Curlew (Numenius americanus)
The Long-billed Curlew is the largest shorebird in North America. The species is considered a Bird of Conservation Concern by the US Fish and Wildlife Service due to the species' small population size, recent population declines, and threats to the species' breeding and non-breeding grounds.
Whimbrel (Numenius phaeopus)
Whimbrels closely resemble Bristle-thighed Curlews. Whimbrels are widely distributed at high-latitude breeding sites around the world, but Alaska-breeding Whimbrels are restricted to sites within the Pacific Flyway. These long-distance migrants are distributed at wintering sites from California to southern Chile.
Below are other science projects associated with this project.
Below are data or web applications associated with this project.
Below are multimedia items associated with this project.
Below are publications associated with this project.
Unusual foraging observations associated with seabird die-offs in Alaska
Shorebirds adjust spring arrival schedules with variable environmental conditions: Four decades of assessment on the Yukon–Kuskokwim Delta, Alaska
Energetic solutions of Rock Sandpipers to harsh winter conditions rely on prey quality
Testing an attachment method for solar-powered tracking devices on a long-distance migrating shorebird
Spatial genetic structure of bristle-thighed curlews (Numenius tahitiensis): Breeding area differentiation not reflected on the non-breeding grounds
Annual migratory patterns of long-billed curlews in the American west
Hemispheric-scale wind selection facilitates bar-tailed godwit circum-migration of the Pacific
Abdominally implanted satellite transmitters affect reproduction and survival rather than migration of large shorebirds
Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska
Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds
Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska
Identical metabolic rate and thermal conductance in Rock Sandpiper (Calidris ptilocnemis) subspecies with contrasting nonbreeding life histories
Below are news stories associated with this project.
Below are partners associated with this project.